use an ice type Pokemon against the dragons and an electric against the garydos
in blackthorn city.
You have to beat team rocket
All you have to do is get to Viridian City.
The eighth gym leader still awaits, as well as the whole of Kanto.
Blue (The eighth gym leader) is waiting on Cinnabar. He won't battle you unless you've beat the rest of the gym leaders
get action replay!
His name is Blue, and he is on Cinnabar Island. Show him the other 7 Kanto Badges and he will go to the Viridian City gym. Then, go to Viridian City and battle him at that gym.
You get to the second gym by traveling through the Union Cave. Once through, you will reach Azalea Town. That town is home to the second gym.
after you beat the eighth gym it is simple. go to the dragon's den and answer the elder's questions. then Clair comes and she will give you the eighth badge. after that go to new bark town and go to the lab. professor elm will then give you the master ball.
You must first navigate your way through the Dragon's Den.
Capture Ho-oh. Not sure of the way to do that, as I have SoulSilver, but I know it has something to do with Ecurteak city and the Tin Tower.
Go through Ice Path on Route 44